jodd.io
Class FileMonitor

java.lang.Object
  jodd.io.FileMonitor

public class FileMonitor
extends java.lang.Object

Monitoring disk files changes. Change event is broadcasted to all registered listeners.

See Also:

FileChangeListener

Nested Class Summary

protected class

FileMonitor.FileMonitorNotifier Actual file monitor timer task.

Field Summary

protected java.util.Map<java.io.File,java.lang.Long>	files
protected java.util.Set<FileChangeListener>	listeners
protected java.lang.Object	lock
protected long	pollingInterval
protected java.util.Timer	timer

Constructor Summary

FileMonitor(long pollingInterval)
Creates a file monitor instance with specified polling interval in ms.

Method Summary

void	monitorFile(java.io.File file) Adds file to listen for.
void	registerListener(FileChangeListener fileChangeListener) Adds listener to this file monitor.
void	releaseFile(java.io.File file) Removes specified file for listening.
void	removeAllListeners() Removes all file listeners/
void	removeListener(FileChangeListener fileChangeListener) Removes listener from this file monitor.
void	start() Starts the file monitoring polling, after it was stopped.
void	stop() Stops the file monitor polling.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

files

protected final java.util.Map<java.io.File,java.lang.Long> files

listeners

protected final java.util.Set<FileChangeListener> listeners

pollingInterval

protected final long pollingInterval

timer

protected java.util.Timer timer

lock

protected final java.lang.Object lock

Constructor Detail

FileMonitor

public FileMonitor(long pollingInterval)

Creates a file monitor instance with specified polling interval in ms.

Method Detail

start

public void start()

Starts the file monitoring polling, after it was stopped.

stop

public void stop()

Stops the file monitor polling.

monitorFile

public void monitorFile(java.io.File file)

Adds file to listen for. File may be any file or folder, including a non-existing file in the case where the creating of the file is to be trapped.

releaseFile

public void releaseFile(java.io.File file)

Removes specified file for listening.

registerListener

public void registerListener(FileChangeListener fileChangeListener)

Adds listener to this file monitor.

removeListener

public void removeListener(FileChangeListener fileChangeListener)

Removes listener from this file monitor.

removeAllListeners

public void removeAllListeners()

Removes all file listeners/